{"id":"CVE-2019-19240","aliases":["EUVD-2019-8866","GHSA-xrwv-jchf-q5j2"],"status":"published","title":"Embedthis GoAhead before 5.0.1 mishandles redirected HTTP requests with a large Host header. The...","description":"Embedthis GoAhead before 5.0.1 mishandles redirected HTTP requests with a large Host header. The GoAhead WebsRedirect uses a static host buffer that has a limited length and can overflow. This can cause a copy of the Host header to fail, leaving that buffer uninitialized, which may leak uninitialized data in a response.","severity":{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.01541,"percentile":0.75116,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-787","CWE-908"],"published":"2019-11-22T18:46:04Z","modified":"2026-06-17T02:26:21Z","products":[{"vendor":"embedthis","product":"goahead"}],"references":[{"url":"https://github.com/embedthis/goahead/issues/290","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"https://github.com/embedthis/goahead/issues/289","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://github.com/embedthis/goahead/releases/tag/v5.0.1","tags":["x_refsource_MISC","x_transferred","Release Notes"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-19240"},{"url":"https://github.com/advisories/GHSA-xrwv-jchf-q5j2"}],"sources":{"cve":[{"id":"CVE-2019-19240","description":"Embedthis GoAhead before 5.0.1 mishandles redirected HTTP requests with a large Host header. The GoAhead WebsRedirect uses a static host buffer that has a limited length and can overflow. This can cause a copy of the Host header to fail, leaving that buffer uninitialized, which may leak uninitialized data in a response.","status":"published","published":"2019-11-22T18:46:04Z","modified":"2024-08-05T02:09:39.553Z","updated_at":"2026-11-02T14:20:20.74896Z"}],"euvd":[{"id":"EUVD-2019-8866","description":"Embedthis GoAhead before 5.0.1 mishandles redirected HTTP requests with a large Host header. The GoAhead WebsRedirect uses a static host buffer that has a limited length and can overflow. This can cause a copy of the Host header to fail, leaving that buffer uninitialized, which may leak uninitialized data in a response.","status":"published","published":"2019-11-22T18:46:04Z","modified":"2024-08-05T02:09:39Z","updated_at":"2026-11-03T02:40:26.287407Z"}],"ghsa":[{"id":"GHSA-xrwv-jchf-q5j2","title":"Embedthis GoAhead before 5.0.1 mishandles redirected HTTP requests with a large Host header. The...","description":"Embedthis GoAhead before 5.0.1 mishandles redirected HTTP requests with a large Host header. The GoAhead WebsRedirect uses a static host buffer that has a limited length and can overflow. This can cause a copy of the Host header to fail, leaving that buffer uninitialized, which may leak uninitialized data in a response.","status":"published","published":"2022-05-24T17:01:48Z","modified":"2023-01-28T05:07:46Z","updated_at":"2026-11-02T14:44:34.06652Z"}],"nvd":[{"id":"CVE-2019-19240","description":"Embedthis GoAhead before 5.0.1 mishandles redirected HTTP requests with a large Host header. The GoAhead WebsRedirect uses a static host buffer that has a limited length and can overflow. This can cause a copy of the Host header to fail, leaving that buffer uninitialized, which may leak uninitialized data in a response.","status":"published","published":"2019-11-22T19:15:12.857Z","modified":"2026-06-17T02:26:21.013Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:P/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-787","CWE-908"],"updated_at":"2026-11-02T14:05:37.024431Z"}]}}